Which of the following best describes the frequency ranges of ultraviolet (UV) light and infrared (IR) light?

• A. UV: 3 × 10^{11} Hz to 4 × 10^{14} Hz; IR: 7.5 × 10^{14} Hz to 3 × 10^{16} Hz
• B. UV: 7.5 × 10^{14} Hz to 3 × 10^{16} Hz; IR: 3 × 10^{11} Hz to 4 × 10^{14} Hz
• C. UV: 4 × 10^{14} Hz to 7.5 × 10^{14} Hz; IR: 7.5 × 10^{14} Hz to 3 × 10^{16} Hz
• D. UV: 3 × 10^{16} Hz to 3 × 10^{18} Hz; IR: 3 × 10^{14} Hz to 3 × 10^{16} Hz

Answer: (B)

Verified step by step guidance

1. Recall that electromagnetic radiation is categorized by frequency ranges, with ultraviolet (UV) light having higher frequencies than infrared (IR) light.
2. Identify the typical frequency range for infrared (IR) light, which generally lies between about \$3 \times 10^{11}\( Hz and \)4 \times 10^{14}$ Hz.
3. Identify the typical frequency range for ultraviolet (UV) light, which generally lies between about \$7.5 \times 10^{14}\( Hz and \)3 \times 10^{16}$ Hz.
4. Compare the given options to these known ranges, noting that UV frequencies are higher than IR frequencies.
5. Select the option where UV frequencies are from \$7.5 \times 10^{14}\( Hz to \)3 \times 10^{16}\( Hz and IR frequencies are from \)3 \times 10^{11}\( Hz to \)4 \times 10^{14}$ Hz, as this correctly reflects the standard frequency ranges for UV and IR light.